Removable gas-burner for ovens.



G. A. TINNERMAN.. l REMOVABLE GAS BURNER FOR OVENS.

APLIOATION FILED JUN-B17, 1910.

1,062,670. 1 Patented May 27, 1913.

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GEORGE A. TINNERMAN, F CLEVELAND, OHIO.

BEMOVABLE GAS-BURNER FOR DVENS.

Specication of Letters Iatent.

Patented May 27,1913,

Application led June 17, 1910. Serial o. 567,357.

.T0 all 'wh-0m i may concern:

Be it known that I, GEORGE vAIuvNiiu- MAN, a citizen of the United States of American residing in. Cleveland, county of Cuyahoga, and State of Ohio, have invent-ed certain new and useful Improvements in Removable GaS-Burners for Ovens, of which the foll`owing specification is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part thereof.

My invention relates more particularly to a removable'gas burner and air spreader or distributer therefor, especially adapted for the conversion of the oven in a combined gas and coal range the object thereof being to provide a removable burner adapted to heat the oven equally when gas is employed as a fuel, in association with means for furnishing ample air'supply, without interfering with the coal range, and for protecting the floor or bottom of the oven.v

The invention as embodied and herein described comprises a perforated frame, which serves tol supply air throughout the length of the burner.' This in turn is superposed upon a suitable non-conducting shield forl protecting the floor of the oven, while a depending pipe makes connection with the gassupply and airlmixer. f

Further detailsand the advantageous features of this construction will be explained in connect-ion with the accompanying drawings, wherein Figure I. is a perspective view of a com- -bined gas and coal range, partly broken away, and showing the oven open and equipped with myimprovements; Fig. II. is a vertical sectional View, showing the gasconnectin partly broken away, and the burner, spreader, shield and a portion of the stove or range-bottom in section; Fig. III. is a perspective view of the unitary burner,

air distributer, shield -and removable connecting-pipe or sleeve; Fig. IV. is a similar view of the bottom duct and protective vmember for the gas-connection, and Fig. V. shows the removable cover therefor.

.Throughout the several figures ofthe drawings, I have employed the same characters of reference to indicate similar parts. lMy improvements are shown in connection with certain additional featuresof my invention described and claimed in my application, Serial No.- 545,347, filed February 23rd, 1910, for patent up'on combined gas vrange is used wit is the uniform heating of the'oven-bottom from beneath. This cannot occur where alarge air-duct is provided, which, moreover, obstruets the bottom flue. access for an undesirable supply of cold air "to the oven.' Accordingly, I employ in cona'nd coal ranges. Therein, as shown in the present drawings, the tire box a is positioned upon the left of the range, and the oven b is adjacent thereto; affording inner walls 'for the down-draft tlues surrounding said oven upon three sides. connected with said lues Z rl cl2, beneath the oven b. A tubular collar e extends through flue (l2 connecting the same with the external air and inclosing the gas connection f 'for the removable oven burner. rI he duct o1` col- The chimney pipe c is.

lar e is adapted to be closed by the reniove', and insert the combined burner, airspreader and shield unit of my invention.

Therein the burner g comprises an elongated castingperforated upon either side and extending substantially the depth of the oven when inserted therein. A depending'pipe g removably fits over .the gas connection f, and extends down into the'duct or collare. l/Vith this collar there connects the perforated air spreader l1, lyirg beneath the burner g, which is thereby adapted to furnishv ample .air supply even to the extremities of the burner which are distantly situated from said duct e.

AA sheet iron frame z' comprises, with the sheet of asbestos-board j, a non-conductive shieldpfor the bottom of the oven; these members being suitably screwed or bolted vfrom beneath, to the longitudinal oven burner g, and, accordingly, inscrtible in and removable from the oven b, as a unitary structure. Necessarily the oven bottom must be thin and highly conductive, so that the heat from the bottom flue may readily reach the oven when coal is used for fuel. In order to prevent downward radiation, and consequent waste of heat when the fuel used is gas, I preferably associate the non-conductive shield above described, with the gas burner, so that said shieltLrnay practically cover-the oven` bottom and protect it from the heat,

An importan rkconsideration when the coal, or other solid fuel,

It also aords nection with an air-duct of relatively small size, and suitably positioned to furnish the necessary suppl of air, my novel air-distributer, which is intimately associated with the burner, to produce eifective combustion immediately above the oven bottom.

The false-bottom lc is insertible Within the oven immediately above the burner g, and serve's to deflect the flame laterally at either side, while the vnon-conducting shield j not onlyprotects the bottom or floor of the oven from the excessive heat, but prevents its downward radiation and consequent loss.

The Apurpose o-f the perforated air-supplying spreader It will be appreciated when one considers that the extremities of the burner are at such distance from the central airsupply, that complete combustion would be practically impossible. Accordingly, the p'erforations It in the chambered air spreader follow generally the contour, first of the duct e and then of the longitudinal burner g, whereby the air entering through said duct is deflected to supply the entire length of the burner and eifect complete combustion. If this were not done, either a number of ducts would be required for a long burner, or only 'that portion of the flame immediately adjacent to the air duct 'would be supplied with suiiicient oxygen to effect combustion.

The convenience afforded by the combined burner, air spreader and shield in converting the oven of a combined coal and gas range to one heated .by gas, will .be readily appreciated, sinethe insertion of this unit and of the false bottom, will at once permit gas to be used, while the removal of these parts and the covering of the duct, will reconvert said oven. f

Having now explained the preferred embodiment of my invention, I claim asl new and desire to secure by Letters Patent, the following'z 1. A removable member for convertible ranges, comprisin an oven-bottom protectl ing-plate or shiel a burner-member superimposed on the shield, and a gas-supply connection for the burner-member, substantially as set forth.

' 2. A removable oven-burner, comprising a gas connection, a tubular member fitting the same,- an associated lynon-conducting shield, and a su vti'posdburner-member adapted to rest W th said shield upon theI bottom of the oven, substantially as set forth;

3., In a removable burner-device for con-.

vertible-ovens, the combination with a combined air-spreader and elongated burner adapted to be removably positioned upon. the oven bottomLofa gas connection, and

an air duct extending tosa'd oven, and respectively connectingvyith the burner and air-spreader; said duct bein .of-materially less area, as compared withie area defined by the burner and air spreader, substantially as set fort-h.

.4. A removable gas burner unit, compris' ing a non-conducting shield, a superposed air-spreader extending transversely thereof, a superposed' burner extend-ing substantially the length of the air-spreader, in combination with a stationary collar adapted to connect the air-spreader with the external air, and a gas connection inelosed therein above which connection the burnenremovably lits, substantially as set forth."Y

5. Tibef combination with an' elongated gas-burner, of an intermediate 'gas-connection therefor, a collar or duct of restricted area, and an air distributer extending substantially the length of the burner and connecting intermediately with said duct; said burner and air-distributor comprising a uniaryhremovable structure, substantially as set ort 6. -The combination with an elongated gas-burner, of an intermediately-connected inferior air-duct of restricted area, and an air-spreader or distributer extending substantially the length of the burner, and having perforations conforming substantially to the contour of said burner and duct; said burner and air-distributer comprising a unitary removable structure, as set forth.

7. The combination with an elongated oven-burner, of a' connecting gas-supplyl ipe, an air-spreader extending substantially the length of the burner and having perforations or openings for distributing the air peripherally thereto; said burner and air-spreader being removably positioned above the oven bottom, and a connection of restricted area for said spreader adapted to supply air thereto, substantially as set forth.

8. In a device of the class described, the combination with a gas-connection, of an elongated burner-member re-mevably tting thereon, an elongated airis reader extending beneath said burner, "an an air-duct of matrially'le'ss area than the air-spreader ous conduitto distribute the external air around the burner-member, substantially as set forth. c

In testimony whereof I aix my signature in'presence of two Witnesses, this fifteenth day of June, A. D., 1910.

GEORGE A. TINNERMAN.-

Witnesses: l

ALBERT H. TINNERMAN, ALBERT LYNN LAWRENCE.

-witl'which--it connects to form a continu- 

